Michael Nino Evensen michaelevensen
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| func ensureRange<T>(value: T, minimum: T, maximum: T) -> T where T : Comparable { | |
| return min(max(value, minimum), maximum) | |
| } |
michaelevensen
/ DynamicFireStoreTableView.swift
Created
December 4, 2019 14:57
Dynamic updating of UITableView with FireStore changes.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| func dataSourceForQuery(_ query: Query) -> CategorySessionsTableViewDataSource { | |
| return CategorySessionsTableViewDataSource(query: query) { (changes, sessions) in | |
| // Success: Perform batch remove / insert of cells | |
| if #available(iOS 11.0, *) { | |
| self.tableView.performBatchUpdates({ | |
| self.performUpdates(for: changes) | |
| }, completion: nil) | |
| } |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // min(max()) example for scrolling | |
| let minValue: CGFloat = 0 | |
| let maxValue: CGFloat = 1 | |
| let dynamicValue = (trackCell.trackImageView.frame.size.height - locationY) / trackCell.trackImageView.frame.size.height | |
| let delta = min(maxValue, max(minValue, dynamicValue) |
michaelevensen
/ FadeTo.swift
Last active
November 8, 2019 12:03
A simple fade-to function that employs a Timer for AVPlayer. Allows for specification of fade time rate / interval.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /// Fades current player to specified `volume` with specified `duration`. | |
| public func fadeTo(volume: Float, duration: TimeInterval = 5.0, completionHandler: @escaping () -> Void) { | |
| // Current player | |
| let player = self.currentPlayer | |
| // Calculated increments for volume steps | |
| let volumeIncrementationRate = 0.15 // Volume adjustments pr. seconds | |
| let volumeDistance = player.volume - volume | |
| let volumeSteps = duration / volumeIncrementationRate |
michaelevensen
/ DynamicallyUpdatingCollectionViewQuery.swift
Created
October 29, 2019 14:42
Dynamically update UICollectionView based on Firestore updatehandler.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| func dataSourceForQuery(_ query: Query) -> FeaturedSessionsCollectionViewDataSource { | |
| return FeaturedSessionsCollectionViewDataSource(query: query) { (changes, _) in | |
| // Perform batch remove / insert of cells | |
| self.collectionView?.performBatchUpdates({ | |
| for (index, change) in changes.enumerated() { | |
| let indexPath = IndexPath(row: index, section: 0) | |
| switch change.type { | |
| case .added: | |
| self.collectionView?.insertItems(at: [indexPath]) |
michaelevensen
/ AVPlayerCrossFade.swift
Last active
September 24, 2024 07:11
Handles cross-fading between two individual AVPlayers, creates a smooth, undulating loop between two AVPlayerItem's.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import UIKit | |
| import AVFoundation | |
| class ViewController: UIViewController { | |
| // Duplicate players to handle optional cross-fading. | |
| let playerQueue = [AVPlayer(), AVPlayer()] | |
| var timeObserverToken: Any? |
michaelevensen
/ ColorScrollView.swift
Created
September 25, 2019 10:01
Controlling a UIViewPropertyAnimator based on scrollView delta.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // | |
| // ViewController.swift | |
| // ColorScroll | |
| // | |
| // Created by Michael Nino Evensen on 25/09/2019. | |
| // Copyright © 2019 Michael Nino Evensen. All rights reserved. | |
| // | |
| import UIKit |
michaelevensen
/ UIImage+Average.swift
Created
September 24, 2019 13:00
Returns average color of UIImage.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| extension UIImage { | |
| var averageColor: UIColor? { | |
| guard let inputImage = CIImage(image: self) else { return nil } | |
| let extentVector = CIVector(x: inputImage.extent.origin.x, y: inputImage.extent.origin.y, z: inputImage.extent.size.width, w: inputImage.extent.size.height) | |
| guard let filter = CIFilter(name: "CIAreaAverage", parameters: [kCIInputImageKey: inputImage, kCIInputExtentKey: extentVector]) else { return nil } | |
| guard let outputImage = filter.outputImage else { return nil } | |
| var bitmap = [UInt8](repeating: 0, count: 4) | |
| let context = CIContext(options: [.workingColorSpace: kCFNull]) |
michaelevensen
/ NewLocalCollection.swift
Created
August 21, 2019 11:04
A class for easily unwrapping, storing and mapping FireStore results to models. Inspired by https://gist.github.com/michaelevensen/c74b79292fa8dba437552f7a9f10a5dc.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // | |
| // LocalCollection.swift | |
| // Slow | |
| // | |
| // Created by Michael Nino Evensen on 20/08/2019. | |
| // Copyright © 2019 Michael Nino Evensen. All rights reserved. | |
| // | |
| import FirebaseFirestore |
michaelevensen
/ DataSourceLocalCollection.swift
Created
August 20, 2019 09:18
Example #3 of custom DataSource implementation using LocalCollection.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // | |
| // Copyright (c) 2018 Google Inc. | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at | |
| // | |
| // http://www.apache.org/licenses/LICENSE-2.0 | |
| // | |
| // Unless required by applicable law or agreed to in writing, software |